Interference diverter



Sept. 5, 1933.

R. F. scHusTl-:R 1,925,938

INTERFEHENCE DIVERTER Filed Feb. 17. 1931 3 Sheets-Sheet 2 Sept. 5, 1933 R. F. scHusTER INTERFERENCE DIVERTER Filed Feb. 1v, 1951 I v v SWW.. QW u\\ iillrlll m m SePt- 5, 1933- R. F. szcHusTER 1,925,938

INTERFERENCE DIVERTER W@ 2y 2f? E @L l@ fig 514012141601 jcasef fluor/nuja.

Patented Sept. 5, 1933 UNITED STATES PATENT OFFICE 7 Claims.

The invention relates to a novel means for clarifying radio reception, and while the embodiments herein illustrated are all attachments for use with conventional receiving sets, the

invention may well be built into such sets at the factory.

The invention aims to overcome interference caused by discharges from local electrical appliances and it serves to collect the interferring 0 wav'es and divert them to the ground so that they cannot interfere with clear reception.

In the accompanying drawings, three forms of construction have been illustrated and will be rather specifically described, with the understanding however that within the scope of the invention as claimed, numerous variations may be made.

Fig. 1 is a longitudinal sectional view on line 1-1 of Fig. 2.

Fig. 2 is a longitudinal sectional viewY at right angles to Fig. 1, as indicated'by line 2-2 of the latter.

Fig. 3 is a transverse sectional View on line 3 3 of Fig, 1.

Figs. 4 and 5 are perspective views showing the two sections of the insulating block which may be conveniently used as housing means for the parts of the invention hereinafter described.

Fig. 6 is a view similar to Fig. 1 but showing a different form of construction.

Figs. 7, 8 and 9 are sectional views on the correspondingly numbered lines of Fig. 6.

Fig. 10 is a view similar to Figs. 1 and 6 but showing a still further form of construction.

Figs. 11 and 12 are sectional views on lines 11--11 and 12-12 of Fig. 10.

In the form of construction shown in Figs. 1 to`5, a one-piece elongated conducting core 15 of copper or other appropriate material, is employed, said core being provided with a binding post 16 or with other equivalent connecting means for a ground wire 17. Near one of its ends, the core 15 is provided with a circumferentially extending flange 18 in conductive connection vwith said core. Near the other end of the core, the latter is surrounded by a conducting ring 19 which is insulated from said core as denoted at 20. A plurality of conductors 21 eX- tend between the flange 18 and the ring 19, are spaced apart about the core, and are soldered or otherwise secured to said flange and ring, said conductors 21 being formed of copper wire or of strands or strips of any other preferred material. These conductors 21 are of course in conductive connection with the flange 18.

(Cl. Z-20) An elongated coil 22 of copper or other preferred conducting material, surrounds the core 15 within the coniines of the conductors 21, said coil being out of conductive connection with all of the aforesaid parts. The ends of coil 22 are 60' connected with binding posts 23 and 24 to which wires 25 and 26 may be connected, one wire leading from the aerial and the other to the set so that the coil 22 forms part of the lead-in wiring of the set.

The parts above described may be conveniently carried by an insulating block formed of two sections 27 and 28 which are recessed at 29 to jointly form a cavity 30.receiving the major portion of the core 15, the coil 22, the conductors 21 and the elements 18, 19 and 20. The block' sections 27 and 28 may well be provided With notches 31 receiving the ends of the core 15, and one end of said core may be secured Y, within one notch 31, by means of the binding post 16. As shown, the block section 27 is additionally notched or grooved at `32 to receive` the ends of the coil 22, said section 27 carrying the binding posts 23 and 24 as well as the binding post 16. Bolts or the like 33 may be em- 80 ployed for securing the two block sections 27' and 28 together.

By means of thebinding posts 23 and 24, the device is connected in any desired portion of the lead-in wiring of a radio-receiving set, and the binding post or other connection 16 is connected with the wire or the like 17 leading to the ground. The radio waves and the interfering waves travel along the coil 22, and said interfering Waves are collected by the conductors 21 90 and the core 15 and diverted to the ground,

whereas the radio waves pass on to the set,' giving clear reception.

In the form of construction illustrated in Figs. 6 to 9, the sections 27a and 28a of the sectional 95 block, are recessed in ways above described and are additionally provided with lateral notches 34 communcating with the cavity 30a. The' notches 34 receive and hold the ends of insulators 35 which span the cavity 30aL transversely. These insulators are preferably disposed in parallel planes and they are provided with disklike central portions 36 and 37 respectively. Extending between the centers oi these disk-like portions 36 and 37, is a composite core 15a of 10 conducting material or materials.

One end portion of the core 15a is formed from a plurality of thin plates 38 of copper or other appropriate material, said plates being disposed in planes which radiate from a central line. At one' end, the plates 38 are all anchored to the insulator portion 37, as indicated at 39. Conducting wires 40 are soldered or otherwise connected with the plates 38, are brought together at the free ends of said plates as indicated at 41, and are jointly extended to a binding post 16 corresponding to the post 16, these wires forming a conductor 42. Two coils 43 and 44 of copper or the like surround, the :conductor 42 andare spacedlapart along thetsame.` These coils 43 andl 44 are insulated' substantially throughout their lengths from the conductorv 42, the insulators being shown at 45. One end of each coil however is in conductive connection with the conductor 42, in any preferred way.. For illustrative purposes, the ends 46 and 4'7 of the coils 43 and 44 respectively, may be con# sidered as soldered to saidc0nduCtQn42'.; The coil 43 is preferably formed from a plurality Y of strands of copper wire or the like, while" the coil 44 I nay be of single strandorm, also of copper or yother lpreferred conductingmaterial.

Two transversely curved, elongated strips 48 of copper or the' like, extend between the insu-` lator portions 36 and 3,7V andare suitably secured against the peripheral edges thereof, said strips being turned inwardly -at one end and secured in a conductive'manner to the," conductor 42'.

The other ends of the strips 48Y may well be said Vcoil 22a, collect rthe interfering waves andA divert them tothe ground. A

In. Figs. 10', 11 andv 12, va further yvariation of construction, is illustrated. A single conductor 15b is provided at one `end with a flange 18.1 corresponding with the flange 18. -Atitsother end, the conductor 15b isprovided with radial plates 38 corresponding with the plates 38, these 59` plates 33a being directly carried by andin conductiveconnection with said conductor 15b. The parts 15", ,182L and 38e form portionsof the con-V ducting core, the remainder vof, saidcore beingconstituted by coils 43a and 44a which corretspond tothe vcoils .43 and 44 above described. Transversely curved 4strips 48a similar to. the strips 48, engage the'periphery of thev flange 18a and at one end are turned inwardly and secured at 49 to the conductor 15b. The other end of 60. the strips 48.l are spaced by and secured to an insulating disk 372V mounted on the conductor 15b. Within the coniines of the strips 48a, is a ycoil 22? .corresponding to the coils 22 and 22e. 'Ihe ends of this coil are connected with binding posts 231 .and 241 `andsaid coilis out offcon-r ductive connection' with all parts except these binding posts. The conductor 15b is connectedV With'the groundV binding post 1Gb.

,cessed block sections 27h' and 281?. V(lne endv of the conductor 15b islheld lby the ,bindingrpost 1Gb. The other end ofthis conductor is preferably Vprovided withra head 5 2 held within' notches orthe like 53. in the blockv sections.

7 As in the forms oiconstruction previously ,dea

The parts above described are carriedby re scribed, the device shown in Figs. 10 to 12 acts to collect the interfering waves and divert them to the ground.

Extended experiments have proven that local interference caused by discharge from electrical appliances, is eliminated by the use of the device.

While excellent results may be obtained from any ofthe forms of construction herein illustrated, attention is again invited to the fact that Within the scope of theinvention as claimed, numerous variations may be made.

kI claim:-

1. An interference diverter comprising a core of' conducting material, a ground wire conductively.. Vconnected with said core, an unbroken conductingcoil surrounding said core and free of'conducting connection therewith, a lead-in vwire;-.ironranaerial' conductively connected with one end of said coil, a lead-in wire for a receivingV setY conductively connected with the other end of said coil, said coil and said lead-in Wires constituting an uninterrupted lead-in line from aerialV to set, and a shell of conducting material around and out of` conductive connection with said coil, said shell being in conductive connec- 190 tion with said ground'wire.

2. AnA interference diverter comprising a core of, conducting material, a ground wire conductively 4connected withvs'aid core, an unbroken conducting coil surrounding said core and free 1 of conducting connection therewith, a lead-in wire from an aerial conductively connected with oneendof said "coil, a lead-in Wire for a receiving set conductively connected with the other end of said,coil,'said coil and said lead-in wires l@ constituting an uninterruped lead-in line from aerial to set, and a shell of conducting material around and out of .conductive connection with said coil,'said shell being conductivelyconnected with said core.. 1M

' v3. An interference diverter comprising ran elongated one-piece core of conducting material having a ground wirev connection, said core being provided with an outstanding circumferentially extending ilange near one end and in conductive connection with said core, a plurality of elongatedconductors extending lingitudinally of and spaced about. said core, said conductors being conductively connected at one end with said flange, means surrounding the core and holding theother ends of said conductors in spaced relation therewith, and a conducting coil around said core between the latter and said conductors, said coil being free of conductive connection with all aforesaid parts and having means at its ends for l@ connecting it in the lead-.in wire of a receiving set.

4. An' interference diverter comprising a plurality of conducting plates disposed in planes radiating from a centralline, an elongated central conductor vextending along said line and in conductive connection with said plates, said conductor extending away from said plates and having a ground wire connection, a plurality of conducting coils spaced apart along said conductor, said lcoils being free of conductive connectionivvith said conductor throughout the greater partsA of their lengths but having ends in conductive connection withsaid conductor, and a relatively large and long kconducting coil surrounding said plates and said plurality of coils, said relatively large and long coil being free of conductive connection with all aforesaid parts and havingmeans at itsends for connecting itin the lead-in Wire of a receiving set.

5. An interference diverter comprising two spaced insulators having disk-like portions, an elongated conducting core extending between said insulators and supported by the centers of said disk-like portions, said core having aground Connection, a conducting coil surrounding and out of conductive connection with said core, the ends of said coil having means for connecting the latter in the lead-in wire of a receiving set, and a plurality of elongated transversely curved conducting strips extending between said insulators and secured against the peripheries of said disklike portions of said insulators, said strips being conductively connected at one end with said core and being free of conductive connection with said coil.

6. An interference diverter comprising an elongated conducting core having a ground connection, said core having an outstanding circumferentially extending flange at one end in conductive connection with said core, annular insulating means surrounding said core at the other end of the latter, elongated transversely curved conducting strips extending between and secured against the peripheries of said flange and insulator, said strips being in conductive connection with said core, and a conducting coil surrounding said core between said ange and insulator and within the connes of said strips, said coil being free of conductive connection with all aforesaid parts and having means at its ends for connecting it in the lead-in wire of a receiving set.

7. An interference diverter comprising an insulating block having three binding posts, said block being formed of two sections recessed to jointly form an elongated cavity, said lblock sections being formed also with notches communicating with said cavity, an interference wave collecting and conducting core extending longitudinally7 in said cavity and connected with one of said binding posts, said core having supporting portions received in said notches and held by said block sections, and an incoming wave conducting coil extending longitudinally within said cavity and having its ends connected With the other two of said binding posts, said coil and corebeing free of conductive connection with each other.

RALPH vF. SCHUSTER. 

